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The Texas counties highlighted in green are under a flood watch through 9 p.m. Friday. Isolated rainfall up to 6 inches is possible.<\/p>\n
nws austin\/san antonio<\/p>\n
A rather strong cold front is moving into South Texas<\/a> Friday morning. As it interacts with a fast-moving low pressure system approaching from the west, the front will produce heavy rainfall, isolated hail and falling temperatures across South and Central Texas.<\/p>\n Heavy rainfall is the biggest threat with this weather system. The National Weather Service has issued a flood watch<\/a> for an area that includes San Antonio, Austin and the Texas Hill Country through 9 p.m. Friday.<\/p>\n Article continues below this ad<\/p>\n Here\u2019s a timeline of what you can expect, along with a look at how far temperatures will drop overnight.<\/p>\n Friday\u2019s storm timeline<\/p>\n Early morning: (3 a.m. to 8 a.m.): Some of the highest rain chances of the entire day are expected early in the morning, as a large cluster of showers and storms is expected to race across the region. San Antonio rain chances will be near 90% during this time, which will likely make the morning commute slow and hazardous.<\/p>\n The cold front will start to push through the region early in the morning as well, forcing temperatures to hover near 65 degrees.<\/p>\n Article continues below this ad<\/p>\n From left, the potential weather radar for 5 a.m. Friday morning and the weather radar model for 1 p.m. Friday. Scattered showers and storms are expected throughout the day.<\/p>\n Pivotal Weather<\/p>\n Midday (8 a.m. to 2 p.m.): Rain chances will drop slightly during this time, but a 70% chance of scattered off-and-on showers and thunderstorms will remain. Temperatures won\u2019t change much, either, likely rising to only 67 degrees by noon.<\/p>\n Late afternoon (2 p.m. to 6 p.m.): Rain chances will stay at 60-70% during this time, but weather models indicate that a line of strong storms might move across the Interstate 35 corridor by the late afternoon, potentially moving through the San Antonio metro area between 3 p.m. and 5 p.m.<\/p>\n Article continues below this ad<\/p>\n Heavy rainfall is the biggest threat with these storms. However, San Antonio is also under a level 1 of 5 risk of severe thunderstorms, meaning that a few isolated storms could produce large hail<\/a> and damaging wind gusts. Most of Friday\u2019s storm activity, though, will not produce hail.<\/p>\n<\/p>\n
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